Related Clues:

• Clean thoroughly
• Prepare to operate
• Clean or chimney follower
• Clean diligently
• Four for four, say
• Wield a broom
• Clean with a broom
• Win the first four games in a World Series, e.g.
• Clean the floor
• Hit the dirt?
• Cancel, so to speak
• Cancel, as a mission
• Scour thoroughly
• Cancel, à la Mission Control
• Scour, as pots